Switch-lock.



C. GRHVIES.

SWlT-CH LOCK.

APPLlcArmN FILED MAY24.1915.

l32;9 Patented ,my 10, 1917.

INSU 770A/ narran slof-rains narnia fr CLAUDE GRMES, 0F CHICAGO,ILLINOIS, ASSIGNOR l? ONE-HALF TO EMMA A.. ALBRIGIT, OF CHICAGO,ILLINOIS.

SWITCH-LOCK.

Application filed May 24, 1916.

To all whom it may concern Be it known that I, CLAUDE GRiMEs, a citizenof the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented new and useful .lmprov'ements inSwitch-Locks, of which the following is a specification.

This invention relates to electric switches which may be locked toprevent unauthorized persons from operating the same. The present deviceis designed more particularly for use in connection with motor vehiclesto lock the switches controlling the ignition circuit, therebypreventing the starting of the car by unauthorized persons.

The invention has for its object to provide a simple and efficientdevice of the kind stated, and to this end it consists in :a novelcombination and arrangement of parts to be hereinafter described andclaimed.

In order that the invention may be better understood, reference is hadto the accompanying drawing forming a part of this specification.

ln the drawing, Figure 1 is Van elevation of the mechanism, the housinginclosing the same being shown in section; Fig. 2 is a plan view; Fig. 3is a cross section on the line 3-3 of Fig. 2; Fig. 4 is a section on theline 4 4 of Fig. 1, and Fig. 5 is a face View of the lock.

Referring specically to the drawing, 10 denotes a suitable housing whichincloses the switch mechanism, and carries a base plate 11 of insulationon which are mounted the stationary contacts 12 of the switch. Themovable switch members are of the push-button type, they being shown at13, and provided with shanks 14 carrying contacts 15 cooperating in theusual manner with the contacts 12. The switch buttons are mounted in theface plate or cover 16 of the housing 10. rlhe switch mechanism, per se,is the subject matter of a companion application and a detaileddescription thereof is therefore not necessary in the presentapplication. It may be stated however that the several switch-buttonsare operatively connected, so that when one is pushed in another one isretracted.

The shank of one of the switch-buttons 13 is operatively connected to aswinging member 17 in the form of a short lever ful- Specificaton ofLetters Patent.

.ing a key-operated rotatable barrel 22,

Patented July 10, 1919i.

Serial No. 99,663.

crumed at one end on a pin 18 carried by a support 19 suitably mountedin the housing 10. The connection between the lever and the button shankis made by a lever 20 fulcrumed on the pin 18 on the side of the support19 opposite the side where the lever 17 is located, said levers 2O and17 being connected at one end by a cross bar 21. Thus, it will be seenthat the movement of the pushbutton shank swings the lever 17, andhence, if said lever should be held stationary, it will be impossible tooperate the push-button, so that the switch will now be locked. Thelocking device comprises the following parts:

rlhe face plate 16 is fitted with a lock havan ordinary lock beingemployed. On the inside of the face plate, the lock barrel projects fromthe lock casing and has a laterally extending tongue 23. Behind this endof the barrel, and spaced slightly therefrom is a rotatable member 24having on one side a projecting pin or abutment 25 which eX- tends intothe path of the tongue 23. Thus, when the barrel 22 is turned and thetongue 23 engages the pin 25, the member 24 will be rotated.

The support 19 carries a plate 26 having an arcuate slot 27 in which thepin 25 works. The plate 26 carries, in spaced relation therewith, across bar 28, the member 24 being lo-l cated between these parts, andmounted on a pivot pin 29 carried thereby.

On the pin 18 is fulcrumed a rocker member 30 having a pitman connection31 with the member 24. The rocker 30 is mounted alongside the lever 17and has a shoulder 31a which is in the path of a side pin or abutment 32on the lever 17.

To lock the switch, the key is turned to move the parts so that theshoulder 31L engages the pin 32, and the key is then withdrawn from thelock. The member 30 now acts as a barrier to the lever 17 and preventsthe swing thereof, and before the switch can be operated, the key mustbe used to retract the member 30.

I claim 1. The combination with a movable member; of a swinging memberconnected thereto and having an abutment, a lock having a rotatablebarrel, a swinging barrier engageable with the abutment to lock theswingmember, a Side tongue on the lock barrel, ing member, and anoperative connection and=a rotatable member havnganoperative l0 betweensaid barrier and the lock barrel. connection with the swinging barrier,and

2. The combination With a vmovable memprovided with an abutment which isn the 5 ber; ci' a swinging member connected therepath of ,tbe-aforesaidtongue,

to and having an abutment,` alock-havng a In testimony whereof I affixmy signature. rotatable barrel, a swinging barrier engageable With theabutment to lock the swinging CLAUDE GRIMES.

Copies of this -patentmay be obtained for-vecents each,-by addressingthe Commissionelt-QI Patents,

, Washington, D. G.

